I have had my daughter on Failsafe for 16 months. It has helped with behavior, hyperactivity, frustration tolerance, emotional volatility. She still has problems in these areas but the diet does seem to help.
Here is a link to a very good overview of the diet:
http://failsafediet.wordpress.com/about ... safe-diet/
"In particular it excludes:
1.Around fifty artificial additives including colours (such as a range of azo-dyes or coal-tar dyes like tartrazine (E102) and sunset yellow (E110)), flavours, preservatives and antioxidants (like sulphites (sulfites), nitrates, nitrites, benzoates (like BHA, BHT), sorbates, parabens, and others).
2.Salicylates (aspirin compounds) found in a wide range of fruits and vegetables as well as man-made NSAIDs and COX II inhibitors.
3.Free neurotransmitters and pseudo-neurotransmitters in foods, such as free glutamates (naturally and artificially occurring MSG), and biogenic amines (like histamine, serotonin, dopamine, phenylethylamine, tyramine and others) found in aged proteins and fermented foods like cheese, game, and hung beef and some plant foods, particularly tropical fruits.
4.Environmental chemicals and strong smells like perfumes, including the use of most commercial cosmetics, scented and coloured toiletries and especially mint and menthol products."